Flow in Open Channels MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Flow in Open Channels, a fundamental topic in the field of Fluid Mechanics. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Flow in Open Channels MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Flow in Open Channels mcq questions that explore various aspects of Flow in Open Channels problems. Each MCQ is crafted to challenge your understanding of Flow in Open Channels principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Fluid Mechanics tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Flow in Open Channels MCQs are your pathway to success in mastering this essential Fluid Mechanics topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Flow in Open Channels. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

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Flow in Open Channels MCQs | Page 8 of 20

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Q71.
The base width and the depth of a trapezoidal channel is 9m and 5m respectively. Calculate the discharge through a channel if the side slope of the channel is 1H:4V and the bed slope is 1 in 500. (n=0.04)

a.

109.73m³⁄s

b.

110.73m³⁄s

c.

111.73m³⁄s

d.

112.73m³⁄s

Discuss
Answer: (a).109.73m³⁄s
Q72.
A circular channel section has diameter of 6m and it is running half. Calculate the discharge through the channel if the bed slope is 1 in 600 and manning’s co efficient is equal to 0.014.

a.

52m³⁄s

b.

53m³⁄s

c.

54m³⁄s

d.

55m³⁄s

Discuss
Answer: (c).54m³⁄s
Q73.
The diameter of a circular channel section which is running full is 8m. Determine the discharge through the channel section if the bed slope is 1 in 600 and the value of the manning’s co efficient is 0.013.

a.

249.45m³⁄s

b.

250.45m³⁄s

c.

251.45m³⁄s

d.

252.45m³⁄s

Discuss
Answer: (b).250.45m³⁄s
Q74.
The area of a channel section is 8m² and the wetted perimeter is 8m. Calculate the value of the bed slope of the channel if the discharge is 33.33m³⁄s and manning’s co efficient is 0.012.

a.

1 in 300

b.

1 in 400

c.

1 in 500

d.

1 in 600

Discuss
Answer: (b).1 in 400
Q75.
The area of the triangular section is 66.67m² and the wetted perimeter of the section is 24.03m. Calculate the value of the manning’s roughness co efficient if the bed slope of the channel section is 1 in 500 and the discharge through the channel is 117.61m³⁄s.

a.

0.03

b.

0.04

c.

0.05

d.

0.06

Discuss
Answer: (c).0.05
Q76.
The discharge through a trapezoidal channel is 245.06m³⁄s and the bed slope is 1 in 1000. Calculate the value of the wetted area if the hydraulic radius is 2.26m. Manning’s roughness co efficient = 0.008.

a.

34m²

b.

35m²

c.

36m²

d.

37m²

Discuss
Answer: (c).36m²
Q77.
Determine the value of manning’s constant for a rectangular channel if Chezy’s constant is equal to 50 and the depth and widths of the channel are 4m and 7m respectively.

a.

0.012

b.

0.022

c.

0.032

d.

0.042

Discuss
Answer: (b).0.022
Q78.
The side slope of a triangular channel section is 1H:4V and the depth is 12m. Calculate the value of chezy’s constant if the value of manning’s constant is 0.03.

a.

32.48

b.

33.48

c.

34.48

d.

35.48

Discuss
Answer: (d).35.48
Q79.
Determine the value of Chezy’ s constant for a trapezoidal channel having depth 3m, base width 11m, side slope 1H:3V and the manning’s co efficient is 0.012.

a.

94.15

b.

94.25

c.

94.35

d.

94.45

Discuss
Answer: (a).94.15
Q80.
Estimate the value of the manning’s constant for a fully running circular section having diameter of 8m and the value of Chezy’s constant is 50.

a.

0.022

b.

0.032

c.

0.042

d.

0.052

Discuss
Answer: (a).0.022
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